What is the Stakeknife scandal, and what happens next?

More than 20 people including senior security force personnel and ex-IRA members may be considered for prosecutionThe agent code named “Stakeknife” was one of British military intelligence’s most valued assets, operating inside the Provisional IRA. Recruited in the late 1970s, the spy rose through the IRA’s ranks in Belfast to become head of the paramilitary group’s informer-hunting unit known as “the nutting squad”. He had the power of life and death ov